<template>
  <div>
    <!-- 面包屑导航区域 -->
    <breadcrumb :breadcrumbs="breadcrumbs" />

    <!-- 卡片视图 --> 
    <el-card> 
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>

      <!-- 步骤条 -->
      <el-steps :active="activeIndex - 0" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <!-- tab标签 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <!-- 基本信息 -->
        <el-tabs
          v-model="activeIndex"
          :tab-position="'left'"
          :before-leave="beforeTabLeave"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>

            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>

            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>

            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cascaderProps"
                @change="handleChange"
                clearable
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>

          <!-- 商品参数 -->
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableData"
              :key="item.attr_id"
              v-show="item.attr_vals.length > 0"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                  border
                >
                </el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>

          <!-- 商品属性 -->
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTableData"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- action图片上传的地址 -->
            <el-upload
              class="upload-demo"
              action="http://127.0.0.1:8888/api/private/v1/upload"
              :headers="headerObj"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>

          <!-- 商品内容 -->
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce"> </quill-editor>
            <el-button type="primary" class="addBtn" @click="btnAddClick"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 预览图片对话框 -->
    <el-dialog title="提示" :visible.sync="preViewVisible" width="50%">
      <img :src="previewPath" class="preViewImg" />
    </el-dialog>
    <!-- <article v-html="addForm.goods_introduce"></article> -->
  </div>
</template>

<script>
import Breadcrumb from "@/components/Breadcrumb";
import { getCategories } from "@/network/goods/cate";
import { getCateParams } from "@/network/goods/params";
import { addGoods } from "@/network/goods/list";
import _ from "lodash"; //深拷贝工具

export default {
  name: "AddGoods",
  data() {
    return {
      breadcrumbs: ["商品管理", "添加商品"],
      activeIndex: "0",
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [], //商品所输分类
        pics: [],
        goods_introduce: "", //商品描述
        attrs: [],
      },
      addFormRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请输入商品分类", trigger: "blur" },
        ],
      },
      cateList: [],
      //级联选择器的配置
      cascaderProps: {
        expandTrigger: "hover",
        value: "cat_id",
        label: "cat_name",
        children: "children",
      },
      manyTableData: [], //动态参数列表数据
      onlyTableData: [], //静态属性
      headerObj: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      previewPath: "", //预览图片路径
      preViewVisible: false,
    };
  },
  components: {
    Breadcrumb,
  },
  methods: {
    //获取所有分类列表
    getCateList() {
      getCategories(3, 1, 10000).then((res) => {
        if (res.meta.status != 200)
          return this.$message.error("获取商品分类列表失败！" + res.meta.msg);
        this.cateList = res.data.result;
      });
    },
    handleChange() {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = [];
        return;
      }
      //动态参数面板需要参数信息
      getCateParams(this.cateId, "many").then((res) => {
        if (res.meta.status != 200)
          return this.$message.error("获取商品参数失败！" + res.meta.msg);
        res.data.forEach((item) => {
          item.attr_vals = item.attr_vals ? item.attr_vals.split(",") : [];
        });
        this.manyTableData = res.data;
      });

      getCateParams(this.cateId, "only").then((res) => {
        if (res.meta.status != 200)
          return this.$message.error("获取商品属性失败！" + res.meta.msg);
        // res.data.forEach((item) => {
        //   item.attr_vals = item.attr_vals ? item.attr_vals.split(",") : [];
        // });
        this.onlyTableData = res.data;
      });
    },
    //切换标签之前的钩子
    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName === "0" && this.addForm.goods_cat.length !== 3) {
        this.$message.error("请选择商品分类！");
        return false;
      }
    },
    // tabClick() {},
    //图片预览
    handlePreview(file) {
      this.previewPath = file.response.data.url;
      this.preViewVisible = true;
    },
    //删除图片
    handleRemove(file) {
      //获取将要删除的图片的临时路径
      const filePath = file.response.data.tmp_path;
      //获取索引值
      const index = this.addForm.pics.findIndex((x) => x.pic === filePath);
      this.addForm.pics.splice(index, 1);
      console.log(this.addForm);
    },
    //监听图片上传成功的事件
    handleSuccess(response) {
      const picInfo = { pic: response.data.tmp_path };
      this.addForm.pics.push(picInfo); //存入表单
    },
    btnAddClick() {
      this.$refs.addFormRef.validate((valid) => {
        if (!valid) return this.$message.error("请填写必要的表单项！");
        const form = _.cloneDeep(this.addForm); //深拷贝
        form.goods_cat = form.goods_cat.join(",");

        //处理动态参数和静态属性
        this.manyTableData.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(","),
          };
          this.addForm.attrs.push(newInfo);
        });

        this.onlyTableData.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals,
          };
          this.addForm.attrs.push(newInfo);
        });
        form.attrs = this.addForm.attrs;

        /**发起网络请求 添加商品 */
        addGoods(form).then((res) => {
          if (res.meta.status != 201)
            return this.$message.error("添加商品失败！" + res.meta.msg);
          this.$message.success("添加成功！");
          this.$router.push("/goods");
        });
      });
    },
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) return this.addForm.goods_cat[2];
      return null;
    },
  },
  created() {
    this.getCateList();
  },
};
</script>
<style lang="less" scoped>
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
.preViewImg {
  width: 100%;
}
.addBtn {
  margin-top: 15px;
  width: 100px;
}
</style>